rod
(noun)
a rod-shaped cell located in the outer retina of the eye that is extremely sensitive to light
Examples of rod in the following topics:
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Transduction of Light
- Light is tranduced in rods and cones; visual information is processed in the retina before entering the brain.
- The rods and cones are the site of transduction of light into a neural signal.
- Visual signals leave the cones and rods, travel to the bipolar cells, and then to ganglion cells.
- In the absence of light, the bipolar neurons that connect rods and cones to ganglion cells are continuously and actively inhibited by the rods and cones.
- Human rod cells and the different types of cone cells each have an optimal wavelength.
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Anatomy of the Eye
- There are two types of photoreceptors in the retina: rods and cones.
- Rods, strongly photosensitive, are located in the outer edges of the retina.
- In humans, cones far outnumber rods in the fovea.
- Rods and cones are photoreceptors in the retina.
- Rods respond in low light and can detect only shades of gray.
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Phylum Chordata
- A notochord, or a longitudinal, flexible rod between the digestive tube and the nerve cord .
- The phylum Chordata contains all of the animals that have a rod-like structure used to give them support.
- All chordates possess a notochord, or a type of flexible support rod, at some point in their development.
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Interphase
- At the center of each animal cell, the centrosomes of animal cells are associated with a pair of rod-like objects, the centrioles, which are at right angles to each other.
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Gene Expression for Spatial Positioning
- The mesoderm also forms a structure called the notochord, which is rod-shaped and forms the central axis of the animal body.
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Organogenesis
- The mesoderm also forms a structure called the notochord, which is rod-shaped and forms the central axis of the animal body.
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Characteristics of Chordata
- The chordates are named for the notochord: a flexible, rod-shaped structure that is found in the embryonic stage of all chordates and also in the adult stage of some chordate species.
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History of Bacterial Diseases
- The causative agent, the (b) bacterium Yersinia pestis, is a gram-negative, rod-shaped bacterium from the class Gamma Proteobacteria.
- Salmonella enterica serovar typhi, the causative agent of typhoid fever, is a gram-negative, rod-shaped gamma protobacterium.
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Bone
- Instead, it consists of trabeculae, which are lamellae that are arranged as rods or plates .
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Characteristics of Eukaryotic Cells